Hi dude, it doesn't sound like you're too attracted to dance the horizontal tango with her...
if you were, you won't think too much cuz if you had the hots for her, your blood would have rushed downwards and with less oxygen in your brain, it'll malfunction slightly more often when she's near you.. you can't think before or even after.. there won't be so much pauses to consider signs... it'd be 'Let's look at the moves... babe?'

and if you really were erecting for her, this thread won't exist as the natural manly instinct will take over and tell you how to drag her back to your cave.. sometimes, there're really no guides/ rules/ techniques.. just natural bestial instinct ya?

let go?

or are you feeling all emotional abt / over her? sex & love-making are quite different... but she does sound like she's comfortable with ya...